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DC Water - Don't Take a Leak

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DC Water's application of fixed leak detection to monitor water mains near high profile construction sites. Presented at the 2017 Tri-Association by McKissack & McKissack and Mott MacDonald for DC Water.

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DC Water - Don't Take a Leak

  1. 1. 131 August 2017 [Don’t] Take a Leak Beyond the Headphones with DC Water August 31, 2017 Presented by: Sarah Ghali, McKissack & McKissack Marlee Franzen, PE, DC Water
  2. 2. 231 August 2017 Agenda THE SITE LEAK DETECTION • CRITERIA • TECHNOLOGY ACOUSTIC LEAK DETECTION • TECHNOLOGY COMPARISON • TECHNOLOGY SELECTION INSTALLATION • PRIMAYER PHOCUS3M • SYRINIX TRUNKMINDER • ECHOLOGIC ECHOSHORE-TX • AQUARIS SPECTRUM AQS-SYS LESSONS LEARNED Q&A
  3. 3. 331 August 2017 ▪ June 2014 – DC Clean Rivers breaks ground on the First Street Tunnel ▪ Located in Bloomingdale neighborhood of Washington, DC’s Ward 5 The Site Photo courtesy of DC Clean River Outreach
  4. 4. 431 August 2017 Project Background ▪ DCCR Project included excavation with ground freezing ▪ October 2015 – DC Water DWS informed of ground movement Photo courtesy of DC Clean River Outreach Photo courtesy of Skanska USA. “How D.C. Is Going To Drill a Tunnel Through Frozen Ground”. Popular Mechanics
  5. 5. 531 August 2017 1st Street, NW ▪ 48-inch Ductile Iron Water Main ▪ Installed in 1988 ▪ TR Flex Joints ▪ Joint deflection tolerance of 0.5 degrees ▪ 6-inch Cast Iron Water Main ▪ Installed in 1893 The Site: Existing Water Infrastructure Conditions Tunnel Shaft Location
  6. 6. 631 August 2017 Adams Street, NW ▪ 36/30-inch Cast Iron Water Main ▪ Installed 1904-1924 The Site: Existing Water Infrastructure Conditions Tunnel Shaft Location
  7. 7. 731 August 2017 1. Fixed Location 2. Continuous Monitoring 3. Autonomous Correlation 4. Automatic Data Transfer and Alerts Leak Detection Criteria
  8. 8. 831 August 2017 ▪ Thermal Detection ▪ Thermography ▪ Electromagnetic Detection ▪ Ground Penetrating Radar (GPR) ▪ Chemical Detection ▪ Tracer Gas ▪ Tracer Liquids Leak Detection Technologies ▪ Acoustic Devices ▪ Listening Rods/Sticks ▪ Geophones ▪ Hydrophones ▪ Leak Noise Loggers ▪ Leak Noise Correlators ▪ Streaming Cable Inline Acoustic Leak Detectors ▪ Free-Floating Inline Acoustic Leak Detectors ▪ Acoustic Fiber Optics (AFO) ▪ Electromagnetic Field Detection
  9. 9. 931 August 2017 ▪ Listening Devices ▪ Handheld ▪ Effectiveness depends on the user experience ▪ Time consuming Acoustic Leak Detection Equipment ▪ Noise Loggers ▪ Deployed in underground fittings or valves ▪ Listen for pipe noise during programmed quietest time ▪ Do not pinpoint location of a leak Photo courtesy of ukleakdetection.co.uk Photo courtesy of HWM Global
  10. 10. 1031 August 2017 ▪ Noise Correlators ▪ Measure pipe noise between 2 locations ▪ Leak position calculated Acoustic Leak Detection Equipment ▪ Correlating Logger ▪ Combines noise logger and correlator ▪ Deployed temporarily or in fixed locations ▪ Continuously monitors ▪ Detects leak generated noise patterns at specific locations along the pipe Photo courtesy of FSC Leak Detection
  11. 11. 1131 August 2017 Acoustic Leak Detection Equipment Summary Manufacturer Technology Name Acoustic Category Deployment Type Data Transmission Pipe Diameter Pipe Material Aclara/ Gutermann STAR ZoneScan Correlating Logger Temporary or Fixed Manual or Automated 2” to 20” • Asbestos Cement • Metallic • PCCP • Plastics Aquarius Spectrum AQS-SYS Correlating Logger Fixed Automated 6” to 46” • Asbestos Cement • Metallic • PCCP • Plastics Echologics EchoShore-DX EchoShore-TX Correlating Logger Fixed Automated ≤12” 14” to 120” • Asbestos Cement • Metallic • PCCP • Plastics HWM Water/ FCS Permalog+ Leak Noise Logger Noise Logger Temporary or Fixed Manual or Automated ≤20” • Asbestos Cement • Metallic • PCCP • Plastics Itron 100W/ Leak Sensor/ MLOG Noise Logger Fixed Automated ≤16” • Metallic • Plastics Syrinix BurstMinder TrunkMinder Pressure & flow monitor Correlating Logger Fixed Automated ≤14” 16”-96” • Asbestos Cement • Metallic • PCCP • Plastics Vivax-Metrotech LOG CORR Correlating Logger Temporary or Fixed Manual or Automated 2” to 20” • Asbestos Cement • Metallic • PCCP • Plastics
  12. 12. 1231 August 2017 Acoustic Leak Detection Equipment Comparison – Small Diameter Water Mains Aclara/ Gutermann Aquarius Spectrum Echologics HWM Water/ FCS Itron Syrinix Vivax- Metrotech STAR ZoneScan AQS-SYS EchoShore- DX Permalog+ Leak Noise Logger 100W/ Leak Sensor/ MLOG TrunkMinder LOG CORR Correlating Logger ✓ ✓ ✓ X X ✓ ✓ Fixed Location ✓ ✓ ✓ ✓ ✓ ✓ ✓ Automatic Data Transmission ✓ ✓ ✓ ✓ ✓ ✓ ✓ Applicable on 6” WM ✓ ✓ ✓ ✓ ✓ X ✓ Applicable on Cast Iron ✓ ✓ ✓ ✓ ✓ ✓ ✓
  13. 13. 1331 August 2017 Acoustic Leak Detection Equipment Comparison – Large Diameter Water Mains Aclara/ Gutermann Aquarius Spectrum Echologics HWM Water/ FCS Itron Syrinix Vivax- Metrotech STAR ZoneScan AQS-SYS EchoShore- TX Permalog+ Leak Noise Logger 100W/ Leak Sensor/ MLOG TrunkMinder LOG CORR Correlating Logger ✓ ✓ ✓ X X ✓ ✓ Fixed Location ✓ ✓ ✓ ✓ ✓ ✓ ✓ Automatic Data Transmission ✓ ✓ ✓ ✓ ✓ ✓ ✓ Applicable on 30” & 48” WM X ✓ ✓ X X ✓ X Applicable on Ductile & Cast Iron ✓ ✓ ✓ ✓ ✓ ✓ ✓
  14. 14. 1431 August 2017 Installation – Primayer Phocus3m
  15. 15. 1531 August 2017 Syrinix TrunkMinder Photo courtesy of Syrinix Photo courtesy of Syrinix
  16. 16. 1631 August 2017 Installation – Echologics EchoShore®-TX Photo courtesy of Echologics
  17. 17. 1731 August 2017 Installation – Echologics EchoShore®-TX 6-inch blow-off nozzle Adapter Adapter & sensors installed
  18. 18. 1831 August 2017 Installation – Echologics EchoShore®-TX
  19. 19. 1931 August 2017 Installation – Echologics EchoShore®-TX
  20. 20. 2031 August 2017 Installation – Echologics EchoShore®-TX Quantity Unit Price Extended Price Leak Detection Nodes 4 ea $18,550 $74,200 Annual Software & Services 2 locations $4,000 $8,000 Total: $82,200 * Standard price listed. DC Water received a promotional pilot price.
  21. 21. 2131 August 2017 Installation – Aquarius Spectrum AQS-SYS
  22. 22. 2231 August 2017 Installation – Aquarius Spectrum AQS-SYS
  23. 23. 2331 August 2017 Installation – Aquarius Spectrum AQS-SYS Quantity Unit Price Extended Price Fire Hydrant Sensors 3 ea $750 $2,250 Underground Sensors 3 ea $1,000 $3,000 Annual Software & Services 6 ea $120 $720 Total: $5,970
  24. 24. 2431 August 2017 Lessons Learned 1. Connection and setup of unit 2. Power source 3. Communication hardware and antenna 4. Data Delivery 5. Permit Requirements
  25. 25. 2531 August 2017 Lessons Learned: Connection + Set-up ▪ Small Diameter Water Mains ▪ Typically require external contact with pipe ▪ Placed in valve chambers, or attached to fire hydrants ▪ All components bundled into a single unit ▪ Optional: Antenna equipped with extension cord ▪ Large Diameter Water Mains ▪ Typically require contact with water column ▪ Limited access port locations ▪ Likely that a new access port would have to be installed ($) ▪ Each unit consists of several separate components ▪ Baseline leak simulation by flushing portion of the watermain
  26. 26. 2631 August 2017 Lessons Learned: Power Source ▪ Small Diameter Water Mains: ▪ Typically battery operated ▪ Regulate power usage by collecting and transmitting data at preassigned times ▪ Average battery life: 5 years ▪ Battery replacement program ▪ Large Diameter Water Mains: ▪ Require larger power source ▪ Power source options: ▪ Direct connection to the power grid ▪ Methanol fuel cells ▪ Battery ▪ Solar panels Photo courtesy of EFOY Energy Solutions
  27. 27. 2731 August 2017 Lessons Learned: Communication Hardware + Antenna ▪ Communication methods: ▪ GSM cellular network ▪ GPRS/3G communication ▪ Satellite communication ▪ Antenna Options: ▪ Extension cords to attach the antennas to the bottom of the manholes lid ▪ Composite manhole covers ▪ Antennas mounted on the manhole lid covered with traffic rated domes ▪ Antennas flushed with the manhole lid ▪ Antenna flushed with the existing grade ▪ Antennas mounted on a pole.
  28. 28. 2831 August 2017 Lessons Learned: Data Delivery – Web User Interface Software ▪ Track leaks through web user interface ▪ Check compatibly with SCADA ▪ For more accurate leak locations, provide GIS Information
  29. 29. 2931 August 2017 Closing Statements ▪ Opportunity to pilot different leak detection technologies in the same environment ▪ No leaks have been identified to date ▪ Opportunity to monitor critical transmission mains nearby large construction jobs ▪ Critical to understand your system’s need before selecting a leak detection technology
  30. 30. 3031 August 2017 Questions + Answers Presenters: Sarah Ghali, P.E. – email: sghali@dcwater.com Marlee Franzen, P.E. – email: mfranzen@dcwater.com Collaborators: Joshua Mazurek, Christopher Coit– DC Water Sonia Oton, Gary Geck, Russel Deason – Mott MacDonald (Water Program Managers)

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